Aurora SpotiRip desktop and web app

- Spotify playlist, library, album and artist browsing with in-app playback
- Song, playlist and album downloads via spotdl with YouTube and Bandcamp fallbacks
- Electron desktop app (castLabs Widevine) with a permanent sidebar layout
- Linux and Windows packaging scripts

components/Spinner.module.css

@@ -0,0 +1,56 @@
+@layer base {
+  .spinner {
+    position: relative;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    color: currentColor;
+  }
+  
+  .spinnerInner {
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    border-radius: 50%;
+    border: 2px solid transparent;
+    border-top-color: var(--spinner-color, var(--primary));
+    animation: spin var(--animation-duration-slow) linear infinite;
+  }
+  
+  .sm {
+    width: 1rem;
+    height: 1rem;
+  }
+  
+  .sm .spinnerInner {
+    border-width: 2px;
+  }
+  
+  .md {
+    width: 1.5rem;
+    height: 1.5rem;
+  }
+  
+  .md .spinnerInner {
+    border-width: 2.5px;
+  }
+  
+  .lg {
+    width: 2.5rem;
+    height: 2.5rem;
+  }
+  
+  .lg .spinnerInner {
+    border-width: 3px;
+  }
+  
+  @keyframes spin {
+    0% {
+      transform: rotate(0deg);
+    }
+    100% {
+      transform: rotate(360deg);
+    }
+  }
+}